125711564 has 24 divisors (see below), whose sum is σ = 243582528. Its totient is φ = 56287440.

The previous prime is 125711563. The next prime is 125711587. The reversal of 125711564 is 465117521.

It is a self number, because there is not a number n which added to its sum of digits gives 125711564.

It is not an unprimeable number, because it can be changed into a prime (125711561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18374 + ... + 24269.

It is an arithmetic number, because the mean of its divisors is an integer number (10149272).

Almost surely, 2^125711564 is an apocalyptic number.

It is an amenable number.

125711564 is a deficient number, since it is larger than the sum of its proper divisors (117870964).

125711564 is a wasteful number, since it uses less digits than its factorization.

125711564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42725 (or 42723 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 125711564 is about 11212.1168384922. The cubic root of 125711564 is about 500.9469574111.

It can be divided in two parts, 1257 and 11564, that added together give a palindrome (12821).

The spelling of 125711564 in words is "one hundred twenty-five million, seven hundred eleven thousand, five hundred sixty-four".